diff --git a/style/components/form.less b/style/components/form.less
index ade2a67a15..bf04ea1ebe 100644
--- a/style/components/form.less
+++ b/style/components/form.less
@@ -80,7 +80,7 @@ input[type="checkbox"] {
 
     &:lang(en) {
       padding-right: 8px;
-    } 
+    }
   }
 
   .@{css-prefix}switch {
@@ -151,12 +151,6 @@ form {
         padding-right: 25px;
         line-height: 32px;
       }
-    } 
-    .@{selectPrefixCls}-arrow {
-      right: 8px;
-      height: 32px;
-      line-height: 32px;
-      width: auto;
     }
 
     .@{selectPrefixCls}-open .@{selectPrefixCls}-selection {